HVAC System

HVAC DTC Troubleshooting: 13

DTC indicator 13:

HVAC Control Unit Internal Error

NOTE: Check the battery condition Battery Test.

1. Turn the ignition switch to LOCK (0), and then back to ON (II).

2. Do the Self-Diagnostic Function with the HVAC control unit.

3. Check for DTCs.

Is DTC 13 indicated?

YES -

The HVAC control unit is faulty, replace the HVAC control unit HVAC Control Unit Removal/Installation.

NO -

Intermittent failure, the HVAC control unit is OK at this time. Check for poor connections at the HVAC control unit and at G502.